Josef Koudelka (1938) The Black Triangle. Czechoslovakia, 1991-1993. Lom Jan Šverm a , the coal basin covers an area of 70 by 20 kilometres. Silver print (c. 2000), signed in pencil on verso. Image: 18 x 54 cm Sheet: 50 x 60 cm - frameBibliography: - Josef Koudelka, The Black Triangle: The Foothills of the Ore Mountains, Vesmir, Prague, 1994, n. p. - Robert Delpire, Chaos: Josef Koudelka , Phaidon, London, 1999, p. 72. - Josef Koudelka, Nationality Doubtful, AIC , Chicago, 2014, pl. 135c, pp. 216-217. Josef Koudelka (1938) The Black Triangle. Czechoslovakia , 1991-1993. Lom Jan Šverma, the coal basin covers an area of 70 by 20 kilometres. Gelatin silver print (c. 2000), signed in pencil on verso. Image: 18 x 54 cm Sheet: 50 x 60 cm Frame